MCP.Market

Fourchan MCP server

by mrfentmen·io.github.mrfentmen/fourchan-mcp·v1.0.0
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Use this MCP server to 4chan, board catalogs, threads, and posts from the raw internet culture...

A85/100grade A
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Safety scan
A85/100

full report

Adoption
New

0 stars

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If you have run it, two minutes of your experience saves the next person an afternoon.

Fourchan tools (3)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • get_catalog

    Get the catalog (all live threads) for a board.

  • get_thread

    Read a thread's posts by thread number.

  • list_boards

    List all 4chan boards with titles and SFW flags.

Public scan report

scanner v0.1.10 · 2026-11-01 · same rubric, same numbers if you re-run it

no findings
  • Code scan7 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 85 days ago12/15
  • Maintainer identityregistry namespace matches repository owner6/10
Overall 85/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Fourchan compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
85/100
higher than 70% of 48,255 servers
Tools
3
the typical server has 7
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break

What its tools let an agent do: 3 read

Install Fourchan in Claude Code, Cursor or VS Code

Runs npx -y fourchan-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add fourchan-mcp -- npx -y fourchan-mcp
Add to Cursor

What the publisher says

From the Fourchan repository's README, as published. We do not edit it. Read it on GitHub

fourchan mcp

MCP server for 4chan, board catalogs, threads, and posts from the raw archive of internet culture.

Tools

Usage

npm run build && node dist/index.js

Example:

get_catalog { board: "g", limit: 10 }
get_thread { board: "g", threadNo: 109460960 }

Keyless (the official read only JSON API at a.4cdn.org). Post HTML is flattened to readable text; image filenames are included.

Nothing above is checked by us. What we check is on the safety report.

Fourchan: common questions

Is Fourchan MCP server safe?
Yes, by our scan: it is graded A (85/100). Read the Fourchan safety report
How do I install Fourchan?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Fourchan need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Fourchan maintained?
The last commit was 88 days ago (2026-08-08). The latest release is v1.0.0.
How does Fourchan compare with other MCP servers?
safety score 85/100 (higher than 70% of 48,255 servers); tools 3 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

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